If you are an Ubuntu user and simply cannot wait to get the latest nmap features, follow the procedure below. Throw this into a file and call it, ‘build_nmap’ and copy it to the /etc/cron.daily directory and you will have a daily build of the latest and greatest version of nmap.
P.S. The same procedure will also work for you Backtrack geeks.
1. Open a shell terminal.
2. svn co –username guest –password “” svn://svn.insecure.org/nmap/.
3. cd nmap
6. sudo make install